Re: M1 820-0220 A No keyboard and TP after spill liquid on display
ok, tomorrow I'll try to do some measurement with DSO on the I2c lines and let you know. thank you.
ictc
Member
Last Activity: 03-12-2024, 12:53 PM
Joined: 05-07-2015
Location: Roma
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M1 820-0220 A No keyboard and TP after spill liquid on display
This machine came with a no power after spill liquid (milk) on the display (customer said did't reach the keyboard...).
On firts attempt I removed oxidation on the jf600 connector and it worked for a week. Thanm the customer complained abot the video turning off after feew minute and than came back to stop again after feew seconds.
I than took off the board and check for other corrosion spots and found two resistors corroded near the lid detect sensor UR200 that could explain the abnormal behaviour. Replacing the resistors solved the problem. At reboot I noticed no... -
Re: HP Elite X2 bios
I agree with you! I just tought the request attached to the existing threads was the cause of the infractions and that's why I opened a new request. I made some mistakes even after reading the rules, It's just my lack of expirience as I had no intention to operate against the forum rules in any circumstancies. I'll try to be more carefull next timeLeave a comment:
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Re: HP Elite X2 bios
Thanks to you, I learned how to use the proper tool and get the password removed. Can you please cancel my other post ?...Leave a comment:
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Re: HP Elite X2 bios
Can anybody remove the password from this dump please?...Leave a comment:
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Re: ASUS X505ZA LVDS pinout
I tried to put a lamp on the back of the screen to see if any image was present and there was not. On the HDMI output the image still visible so the gpu side I assume is fine. The only problem still with the EDP dispaly output...Last edited by ictc; 04-02-2021, 08:33 AM.Leave a comment:
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Re: ASUS X505ZA LVDS pinout
I do not know what signals expect on the edp connector in order to get the image. Backlight power came straight from the main 19v power rail and it is connected on pins 36-37-38-39 with a solder blob as you can see from the images. In order to solve the short I had to separate the first to layers and than isolate the copper trace from the ground plane underneath. I also had to isolate two vias because I didn't know where to attach it because all artound was just burned out.Leave a comment:
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Re: ASUS X505ZA LVDS pinout
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ASUS X505ZA LVDS pinout
I got this board for repair after liquid spillage that burn part of the 40 pins lvds/edp connector on the board. 3 pins (39, 38,37) related to the bigger copper trace were completely missing but the trace still visible. The traces 40 and 36 are missing. I need to create the traces for these pins but have no idea where are supposed to be connect on the pcb as the original traces and pads are completely missing. Anybody has an identical or very similar board to look for or otherwise knows where those pins are supposed to go? I searched on VESA homepage and I found a pin correspondace matrix where...Last edited by ictc; 03-29-2021, 05:48 AM. -
Re: toshiba 32AV933G i need dump eprom
Me too!!! Is there anybody willing to share the dump with us?Leave a comment:
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Re: Schematics iMac A1418 820-3482-A
thank youLeave a comment:
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Re: Macbook pro a1502 Password
You should buy an adapter that fits the connector on the motherboard. There is a company on internet that sells that part and also a variant of the same system that contains also the password clean bios. That cost a lot and I consider it a must if you do many of this repairs otherwise I suggest to desolder the chip and connect wires to it and connect those to the mini pro.Leave a comment:
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Re: Need BIOS Dump For Laptop HP 15-ac126TU, AHL50/ABL52 LA-C701P Rev:1.0
I have almost a similar problem on this board and I found the coil PL14 boiling after feew seconds. This board came to me after a moderate liquid damage. I have other tension but on that coil I get 1,8v and the related coil burn after some seconds. The board power up and reach a maximum of 360mA but hangs at this stage. I still want to try a new firmware but I wonder if it's uselless considering a probable cpu short... Have anyone came across someting like this? The coil is acting as resistor holding all the...Last edited by ictc; 12-11-2018, 10:57 AM.Leave a comment:
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Re: Asus N550J Schematic diagram
Does anybody have a link to the pdf schematic, please? I've found just the boardview in the previous attached links...Leave a comment:
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Re: MacBook A1278 can't power on
I had an identical issue coused by the bad solder joint on pad 14 of the qfn Q7000. Apparently the solder need to stick not just to the bottom side pads of the chip to make a proper contact......Leave a comment:
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